<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=11"/>
<meta name="generator" content="Doxygen 1.9.4"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Flow-IPC: session/detail/shm/arena_lend/jemalloc/session_impl.hpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr id="projectrow">
  <td id="projectalign">
   <div id="projectname">Flow-IPC<span id="projectnumber">&#160;1.0.2</span>
   </div>
   <div id="projectbrief">Flow-IPC project: Full implementation reference.</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.4 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
var searchBox = new SearchBox("searchBox", "search",'Search','.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
/* @license-end */
</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div id="nav-path" class="navpath">
  <ul>
<li class="navelem"><a class="el" href="dir_b574b0807182fd54d29cf48452072c45.html">session</a></li><li class="navelem"><a class="el" href="dir_e8a6be6454742763ef88d859db4d5829.html">detail</a></li><li class="navelem"><a class="el" href="dir_0ec06e8c7fb5f28b16ad5cd684ffbafc.html">shm</a></li><li class="navelem"><a class="el" href="dir_227cbe559f4164f1c4cf4abf7bafbe8c.html">arena_lend</a></li><li class="navelem"><a class="el" href="dir_2274bd8bf2aa5079c91aaa407be30e38.html">jemalloc</a></li>  </ul>
</div>
</div><!-- top -->
<div class="header">
  <div class="headertitle"><div class="title">session_impl.hpp</div></div>
</div><!--header-->
<div class="contents">
<a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow-IPC: SHM-jemalloc</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright (c) 2023 Akamai Technologies, Inc.; and other contributors.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> * Each commit is copyright by its respective author or author&#39;s employer.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * Licensed under the MIT License:</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> *</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to deal</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> * in the Software without restriction, including without limitation the rights</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * copies of the Software, and to permit persons to whom the Software is</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> *</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * The above copyright notice and this permission notice shall be included in</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * all copies or substantial portions of the Software.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> *</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment"> * THE SOFTWARE. */</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"></span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment"></span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="preprocessor">#include &quot;ipc/shm/arena_lend/jemalloc/ipc_arena.hpp&quot;</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &quot;ipc/shm/arena_lend/jemalloc/jemalloc.hpp&quot;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#include &quot;ipc/session/standalone/shm/arena_lend/borrower_shm_pool_collection_repository.hpp&quot;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="preprocessor">#include &quot;ipc/session/standalone/shm/arena_lend/jemalloc/shm_session.hpp&quot;</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="preprocessor">#include &quot;<a class="code" href="ipc__shm__arena__lend_2src_2ipc_2session_2shm_2arena__lend_2jemalloc_2error_8hpp.html">ipc/session/shm/arena_lend/jemalloc/error.hpp</a>&quot;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#include &quot;<a class="code" href="session_2shm_2arena__lend_2jemalloc_2jemalloc_8hpp.html">ipc/session/shm/arena_lend/jemalloc/jemalloc.hpp</a>&quot;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#include &quot;<a class="code" href="session_2detail_2shm_2arena__lend_2jemalloc_2jemalloc__fwd_8hpp.html">ipc/session/detail/shm/arena_lend/jemalloc/jemalloc_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="preprocessor">#include &quot;<a class="code" href="session__shared__name_8hpp.html">ipc/session/detail/session_shared_name.hpp</a>&quot;</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">#include &quot;<a class="code" href="channel__base_8hpp.html">ipc/transport/struc/channel_base.hpp</a>&quot;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#include &quot;<a class="code" href="transport_2struc_2shm_2arena__lend_2jemalloc_2jemalloc__fwd_8hpp.html">ipc/transport/struc/shm/arena_lend/jemalloc/jemalloc_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &quot;<a class="code" href="transport_2struc_2shm_2arena__lend_2jemalloc_2jemalloc_8hpp.html">ipc/transport/struc/shm/arena_lend/jemalloc/jemalloc.hpp</a>&quot;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span> </div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc.html">ipc::session::shm::arena_lend::jemalloc</a></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>{</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="comment">// Types.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="comment"></span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment">/**</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment"> * Common data and logic for shm::arena_lend::jemalloc::Server_session_impl and</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment"> * shm::arena_lend::jemalloc::Client_session_impl.  Arena-lending SHM-providers are almost exactly the same,</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment"> * once everything is open; the only difference is session-server provides an extra `Arena` shared among</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment"> * all sessions with the same opposing Client_app (created the first time such a session-client establishes</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment"> * a session); jemalloc::Session_server tracks these `Arena`s and coordinates with jemalloc::Server_session.</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment"> * So all the in-common stuff is here in this internally-used super-class of the 2 `*_impl`.  The setup</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment"> * procedure is asymmetrical, and the two sides of that asymmetry are in those 2 `*_impl`s -- including</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment"> * the differing APIs (e.g., Client_session_impl::sync_connect()).</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment"> *</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="comment"> * @tparam Session_impl_t</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment"> *         Our base that our sub-class wants to build on-top-of.  E.g., `Server_session_impl&lt;...&gt;`.</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment"> */</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> Session_impl_t&gt;</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html">   59</a></span><span class="keyword">class </span><a class="code hl_class" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html">Session_impl</a> : <span class="keyword">public</span> <a class="code hl_class" href="classSession__impl__t.html">Session_impl_t</a></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>{</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment"></span> </div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment">  /// Short-hand for base class.</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a445e945051a370bb71b124840f994a3b">   65</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_class" href="classSession__impl__t.html">Base</a> = <a class="code hl_class" href="classSession__impl__t.html">Session_impl_t</a>;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment"></span> </div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment">  /// Short-hand for Session_base super-class.</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a9e281c0e15ff899034ca059aa9e0e4f6">   68</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1session_1_1Session__base.html">Session_base_obj</a> = <span class="keyword">typename</span> Base::Session_base_obj;</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment"></span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="comment">   *</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="comment">   * Internally:</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="comment">   * An arena-lending SHM-provider&#39;s arena is simply this.  The key is each side (including ours) maintains</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="comment">   * 1+ (2 on server, 1 on client) such arenas and then all allocations in this process are from there, never</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="comment">   * from an opposing process.  This is in contrast to, in particular, non-arena-lending</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="comment">   * session::shm::classic::Session_impl::Arena which is symmetrically shared (allocated-in, etc.) by both sides.</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="comment">   */</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a05a924415ca44783d3ef5c0efb31f42e">   79</a></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a05a924415ca44783d3ef5c0efb31f42e">Arena</a> = ipc::shm::arena_lend::jemalloc::Ipc_arena;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="comment"></span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span><span class="comment">  /// See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#acde57c6511b5c4aef9079f116f8ca6a8">   82</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#acde57c6511b5c4aef9079f116f8ca6a8">Shm_session</a> = jemalloc::Shm_session;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="comment"></span> </div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment">  /// See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Message_body&gt;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#aae5dfc5e76df6d857163d2e87da78c13">   86</a></span>  <span class="keyword">using </span><a class="code hl_class" href="classipc_1_1transport_1_1struc_1_1Channel.html">Structured_channel</a></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>    = <a class="code hl_class" href="classipc_1_1transport_1_1struc_1_1Channel.html">transport::struc::shm::arena_lend::jemalloc::Channel&lt;typename Base::Channel_obj, Message_body&gt;</a>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="comment"></span> </div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment">  /// See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a8592edcdb25d0c824a2e72e1539c884f">   90</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a8592edcdb25d0c824a2e72e1539c884f">Structured_msg_builder_config</a> = <span class="keyword">typename</span> transport::struc::shm::arena_lend::jemalloc::Builder::Config;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment"></span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="comment">  /// See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#af5fc836fca12ea5f4de580c15d4225d1">   93</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#af5fc836fca12ea5f4de580c15d4225d1">Structured_msg_reader_config</a> = <span class="keyword">typename</span> transport::struc::shm::arena_lend::jemalloc::Reader::Config;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment"></span> </div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="comment">  /// Alias for a light-weight blob used in borrow_object() and lend_object().</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a314a767c3ed26af5e3eb0f6b640e1f1b">   96</a></span><span class="comment"></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a314a767c3ed26af5e3eb0f6b640e1f1b">Blob</a> = Shm_session::Blob;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>  <span class="comment">// Constructors/destructor.</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="comment"></span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="comment">  /// Inherit ctor.</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="comment"></span>  <span class="keyword">using </span>Base::Base;</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="comment"></span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span><span class="comment">   *</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment">   * @note `app_shm()` is only in our sub-class Server_session_impl, not Client_session_impl.</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment">   *</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">   */</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a24a9e7098a5f58574e8ca88a035365a7">  110</a></span>  <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a05a924415ca44783d3ef5c0efb31f42e">Arena</a>* <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a24a9e7098a5f58574e8ca88a035365a7">session_shm</a>();</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment"></span> </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment">   */</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a90b16390f24a5fc481f6d00ebdb05c85">  116</a></span>  std::shared_ptr&lt;Arena&gt; <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a90b16390f24a5fc481f6d00ebdb05c85">session_shm_ptr</a>();</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="comment"></span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span><span class="comment">   *</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="comment">   * @param handle</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="comment">   *        See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment">   */</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a76bdd6d7541039ab356051fcc9a01afa">  126</a></span>  <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a314a767c3ed26af5e3eb0f6b640e1f1b">Blob</a> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a76bdd6d7541039ab356051fcc9a01afa">lend_object</a>(<span class="keyword">const</span> <span class="keyword">typename</span> Arena::template Handle&lt;T&gt;&amp; handle);</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="comment"></span> </div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span><span class="comment">   *</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span><span class="comment">   * @param serialization</span></div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment">   *        See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span><span class="comment">   */</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6482736670c2bfb6a8bc259bfdb17fa">  136</a></span>  <span class="keyword">typename</span> Arena::template Handle&lt;T&gt; <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6482736670c2bfb6a8bc259bfdb17fa">borrow_object</a>(<span class="keyword">const</span> <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a314a767c3ed26af5e3eb0f6b640e1f1b">Blob</a>&amp; serialization);</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span><span class="comment"></span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">   */</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abe3d48af95fb68929d056e9269a9bc30">  142</a></span>  <a class="code hl_struct" href="structipc_1_1transport_1_1struc_1_1Heap__fixed__builder_1_1Config.html">Structured_msg_builder_config</a> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abe3d48af95fb68929d056e9269a9bc30">session_shm_builder_config</a>();</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="comment"></span> </div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span><span class="comment">   */</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a393edf51b9c503ffbbdfb65a34235a0e">  148</a></span>  <span class="keyword">typename</span> Structured_msg_builder_config::Builder::Session <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a393edf51b9c503ffbbdfb65a34235a0e">session_shm_lender_session</a>();</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="comment"></span> </div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span><span class="comment">   */</span></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a27cf1a12563f5709e31b6be0ac29289a">  154</a></span>  <a class="code hl_struct" href="structipc_1_1transport_1_1struc_1_1Heap__reader_1_1Config.html">Structured_msg_reader_config</a> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a27cf1a12563f5709e31b6be0ac29289a">session_shm_reader_config</a>();</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment"></span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span><span class="comment">   *</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span><span class="comment">   * @note `app_shm_builder_config()` is only in our sub-class Server_session_impl, not Client_session_impl.</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span><span class="comment">   *       Yet this app_shm_reader_config() exists in both.  Again see the public counterpart for discussion</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span><span class="comment">   *       as to why/the exact meaning of app_shm_reader_config() for arena-lending SHM-providers.</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span><span class="comment">   *</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="comment">   */</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abf580a9b0c7ae3609cbdbeca96ab0e2e">  165</a></span>  <a class="code hl_struct" href="structipc_1_1transport_1_1struc_1_1Heap__reader_1_1Config.html">Structured_msg_reader_config</a> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abf580a9b0c7ae3609cbdbeca96ab0e2e">app_shm_reader_config</a>();</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span><span class="comment"></span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span><span class="comment">   */</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab1a6a87ae71fc0b6b14a7af7aec4b2bc">  171</a></span>  <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#acde57c6511b5c4aef9079f116f8ca6a8">Shm_session</a>* <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab1a6a87ae71fc0b6b14a7af7aec4b2bc">shm_session</a>();</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span><span class="comment"></span> </div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span><span class="comment">   * See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span><span class="comment">   * @return See shm::arena_lend::jemalloc::Session_mv counterpart.</span></div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span><span class="comment">   */</span></div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a5979ebed1dcdb2d90b029076849fd146">  177</a></span>  <a class="code hl_struct" href="structipc_1_1transport_1_1struc_1_1Heap__reader_1_1Config.html">Structured_msg_reader_config</a> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a5979ebed1dcdb2d90b029076849fd146">shm_reader_config</a>();</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span> </div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>  <span class="comment">// The LOG_*() macros don&#39;t see Log_context::get_log*() from base otherwise....</span></div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>  <span class="keyword">using </span>flow::log::Log_context::get_logger;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>  <span class="keyword">using </span>flow::log::Log_context::get_log_component;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span> </div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span><span class="comment"></span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="comment">   * How the SHM-provider refers to a #Shm_session.  As of this writing publicly they are exclusively available via</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span><span class="comment">   * these handles (I (ygoldfel) believe there might be plans to eliminate this requirement).</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span><span class="comment">   * At any rate, until then, an #Shm_session_ptr null state is useful as &quot;not-an-arena-yet&quot; semantic;</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment">   * if indeed the mandatory-ref-counted-handle semantic goes away, this should probably become</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span><span class="comment">   * `unique_ptr&lt;Shm_session&gt;`.</span></div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span><span class="comment">   */</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a39b9fc08a109f79471b7606842e3a8de">  193</a></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a39b9fc08a109f79471b7606842e3a8de">Shm_session_ptr</a> = std::shared_ptr&lt;Shm_session&gt;;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span> </div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span><span class="comment"></span> </div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="comment">   * To be invoked at most once, synchronously sets up nearly-all aspects of this arena-lending-SHM-capable `Session`;</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><span class="comment">   * the prerequisite from sub-class `_impl` being that the possibly-asynchronous steps leading up to this have been</span></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span><span class="comment">   * completed successfully.  Namely the arg `local_hndl` is the local half of the connected socket-pair created</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span><span class="comment">   * by the server as needed to create the internal-use IPC channel for the SHM-provider; and</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span><span class="comment">   *   - Client_session_impl: it has async-received this item, after opposing Server_session_impl generated it;</span></div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span><span class="comment">   *   - Server_session_impl: it has generated it and successfully sent the other (of 2) handle to opposing</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span><span class="comment">   *     Client_session_impl.</span></div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span><span class="comment">   *</span></div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span><span class="comment">   * That says &quot;nearly-all aspects.&quot;  That is because Server_session_impl must do one extra thing; namely also create</span></div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span><span class="comment">   * the `.app_shm()`-returned #Arena and pass that to us as `app_shm_or_null`.</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span><span class="comment">   *</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span><span class="comment">   * @param local_hndl</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span><span class="comment">   *        See above.  Must not be `.null()`; else behavior undefined (assertion may trip).</span></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span><span class="comment">   *        `local_hndl` becomes `.null()` at exit.  Regardless of init_shm() success or failure, it shall ensure</span></div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span><span class="comment">   *        return of the contained native handle to the OS at the proper time (the caller can rest easy).</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span><span class="comment">   * @param pool_name_fragment_or_empty</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span><span class="comment">   *        Function that shall help compute SHM-pool names as needed by the SHM-provider.</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span><span class="comment">   *        In particular the final absolute pool name, for each pool, shall be /P/X/R, where P and R will</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span><span class="comment">   *        be determined by `*this` internally; while X -- which shall exclude the leading and trailing</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span><span class="comment">   *        util::Shared_name::S_SEPARATOR (represented as forward-slash in this explanation) -- is</span></div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="comment">   *        supplied in `pool_name_fragment_or_empty`.  If the arg is `.empty()`, then the /X/ part shall be</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="comment">   *        omitted.  Rationale: for cleanup purposes Client_session_impl needs to encode certain info</span></div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span><span class="comment">   *        (spoiler alert: session-client process ID) that can be later parsed-out upon performing a</span></div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span><span class="comment">   *        `for_each_persistent()` (spoiler alert: directory-listing of /dev/shm in Linux at least).</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span><span class="comment">   *        More generally perhaps other info could be encoded there so as to be acquired from an existing</span></div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span><span class="comment">   *        pool-name later.  So this here provides the opportunity for our sub-classes to do that.</span></div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span><span class="comment">   * @param app_shm_or_null</span></div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span><span class="comment">   *        See above.  It&#39;ll be registered with shm_session() unless null.</span></div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span><span class="comment">   * @return Whether it was successful (creation of, at least, the #Arena may fail); falsy if so,</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">   *         the reason describing failure if not.  In the former case, post-conditions:</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">   *         session_shm() and shm_session() are not null.</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span><span class="comment">   */</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a46155078d8764c71a8d75db64345074b">  230</a></span>  <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a46155078d8764c71a8d75db64345074b">init_shm</a>(<a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">util::Native_handle</a>&amp;&amp; local_hndl,</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>                      <span class="keyword">const</span> <a class="code hl_class" href="classipc_1_1util_1_1Shared__name.html">Shared_name</a>&amp; pool_name_fragment_or_empty,</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>                      <span class="keyword">const</span> std::shared_ptr&lt;Arena&gt;&amp; app_shm_or_null = {});</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span><span class="comment"></span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span><span class="comment">   * Undoes init_shm_arenas(), namely destroying shm_session() pointee and session_shm() pointee.  Note</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">   * that any other arena (perhaps Server_session_impl::app_shm() pointee?) registered with</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="comment">   * shm_session() continues to exist; just objects from it cannot be `lend_object()`ed through that</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment">   * shm_session() anymore (but may well be lendable through other sessions -- to other processes).</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span><span class="comment">   *</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span><span class="comment">   * Intended as of this writing as a one-time resource clean in case of subsequent failure.</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span><span class="comment">   */</span></div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6a0c754becd19900b19f14b849bb5e7">  242</a></span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6a0c754becd19900b19f14b849bb5e7">reset_shm</a>();</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span> </div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>  <span class="comment">// Data.</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span><span class="comment"></span> </div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span><span class="comment">  /// See session_shm().  This becomes non-null in init_shm().</span></div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a830c19b190c29b9bb326b0790e11976c">  248</a></span><span class="comment"></span>  std::shared_ptr&lt;Arena&gt; <a class="code hl_variable" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a830c19b190c29b9bb326b0790e11976c">m_session_shm</a>;</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span><span class="comment"></span> </div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span><span class="comment">  /// Internal-use transport::struc::Channel for #m_shm_session.  null &lt;=&gt; #m_shm_session is null.</span></div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a264175697b8e32e732bee46790ab3c67">  251</a></span><span class="comment"></span>  std::optional&lt;typename Shm_session::Shm_channel&gt; <a class="code hl_variable" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a264175697b8e32e732bee46790ab3c67">m_shm_channel</a>;</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span><span class="comment"></span> </div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span><span class="comment">  /// See shm_session().  This becomes non-null in init_shm().</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a49b633551f139e19999c0d4b060dc65b">  254</a></span><span class="comment"></span>  <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a39b9fc08a109f79471b7606842e3a8de">Shm_session_ptr</a> <a class="code hl_variable" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a49b633551f139e19999c0d4b060dc65b">m_shm_session</a>;</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>}; <span class="comment">// class Session_impl</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span> </div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span><span class="comment">// Free functions: in *_fwd.hpp.</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span> </div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span><span class="comment">// Template implementations.</span></div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span><span class="comment"></span> </div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span><span class="comment">/// Internally used macro; public API users should disregard (same deal as in struc/channel.hpp).</span></div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"><a class="line" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">  262</a></span><span class="comment"></span><span class="preprocessor">#define TEMPLATE_JEM_SESSION_IMPL \</span></div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span><span class="preprocessor">  template&lt;typename Session_impl_t&gt;</span><span class="comment"></span></div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span><span class="comment">/// Internally used macro; public API users should disregard (same deal as in struc/channel.hpp).</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"><a class="line" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#a35b1b189e385cec58168c616b8a7abbf">  265</a></span><span class="comment"></span><span class="preprocessor">#define CLASS_JEM_SESSION_IMPL \</span></div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span><span class="preprocessor">  Session_impl&lt;Session_impl_t&gt;</span></div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span> </div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a46155078d8764c71a8d75db64345074b">  269</a></span><a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a> CLASS_JEM_SESSION_IMPL::init_shm</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>             (<a class="code hl_struct" href="structipc_1_1util_1_1Native__handle.html">util::Native_handle</a>&amp;&amp; local_hndl,</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>              <span class="keyword">const</span> <a class="code hl_class" href="classipc_1_1util_1_1Shared__name.html">Shared_name</a>&amp; pool_name_fragment_or_empty,</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span>              <span class="keyword">const</span> std::shared_ptr&lt;Arena&gt;&amp; app_shm_or_null)</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>{</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>  <span class="keyword">using </span>ipc::shm::arena_lend::jemalloc::Memory_manager;</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>  <span class="keyword">using </span>flow::util::ostream_op_string;</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>  <span class="keyword">using </span>std::make_shared;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>  <span class="keyword">using </span>std::string;</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>  <span class="keyword">using </span>std::to_string;</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span> </div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span>  <span class="comment">// We are in thread W (of vanilla Server/Client_session_impl).</span></div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span> </div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>  assert(!local_hndl.null());</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span> </div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span>  assert(!m_session_shm);</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>  assert(!m_shm_session);</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span> </div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>  <span class="comment">// First m_session_shm (per-session-scope Arena).  This can fail.</span></div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span> </div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span>  <span class="comment">/* Arena needs a pool namer it will invoke each time the memory manager decides it wants a new mmap()ped vaddr</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="comment">   * space (in the SHM context, &lt;-&gt; SHM-pool).  We use our standard semantics for per-session items; but</span></div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span><span class="comment">   * possibly add pool_name_fragment_or_empty for reasons explained in our method doc header.  To save some compute</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span><span class="comment">   * cycles pre-compute the prefix and remember it via capture. */</span></div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>  <span class="keyword">auto</span> shm_pool_name_prefix = <a class="code hl_function" href="namespaceipc_1_1session.html#a365d2d63f77b738e67e206af6b702634">build_conventional_shared_name</a>(<a class="code hl_variable" href="classipc_1_1util_1_1Shared__name.html#a4c294e23753eb706b4c297d99d24cd48">Shared_name::S_RESOURCE_TYPE_ID_SHM</a>,</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>                                                             <a class="code hl_function" href="classipc_1_1util_1_1Shared__name.html#a48f20b7b54490aa10dc64081d34c55b2">Shared_name::ct</a>(Base::Base::m_srv_app_ref.m_name),</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>                                                             Base::Base::srv_namespace(),</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>                                                             <a class="code hl_function" href="classipc_1_1util_1_1Shared__name.html#a48f20b7b54490aa10dc64081d34c55b2">Shared_name::ct</a>(Base::Base::cli_app_ptr()-&gt;m_name),</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span>                                                             Base::Base::cli_namespace());</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>  shm_pool_name_prefix /= <a class="code hl_variable" href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc.html#a8902859cb5006277933c12eeb9c6ef5d">SHM_SUBTYPE_PREFIX</a>;</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>  <span class="keywordflow">if</span> (!pool_name_fragment_or_empty.<a class="code hl_function" href="classipc_1_1util_1_1Shared__name.html#a861ea6c9ad6672e83bab5c7747b66f7b">empty</a>())</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>  {</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>    shm_pool_name_prefix /= pool_name_fragment_or_empty;</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>  }</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>  shm_pool_name_prefix /= <span class="stringliteral">&quot;&quot;</span>; <span class="comment">// Might as well remember the last separator too.</span></div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span> </div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>  <span class="keyword">auto</span> pool_naming_func = [shm_pool_name_prefix = std::move(shm_pool_name_prefix)](<span class="keyword">auto</span> pool_id) -&gt; <span class="keywordtype">string</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>  {</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>    <span class="comment">// @todo Arena expects string at the moment; might/should change to Shared_name at some point.</span></div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span> </div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>    <span class="keywordtype">string</span> shm_pool_name = shm_pool_name_prefix.<a class="code hl_function" href="classipc_1_1util_1_1Shared__name.html#ae89e1e061f87ffe0288514e254837595">str</a>();</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>    <span class="comment">// @todo to_string() deals with locales which may be slow.  Consider std::to_chars().</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>    <span class="keywordflow">return</span> shm_pool_name += to_string(pool_id);</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span>  }; <span class="comment">// auto pool_naming_func =</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span> </div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>  m_session_shm</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>    = Arena::create(get_logger(),</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>                    <span class="comment">/* @todo At the moment this is fine: other that storing Logger* this is data-free in practice.</span></div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span><span class="comment">                     * TBD whether &quot;formally&quot; this is correct, or we should be storing a singleton or let user</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span><span class="comment">                     * pass-in a thing, or what; particularly if this goes beyond jemalloc specifically.</span></div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span><span class="comment">                     * At the moment it really is fine; even though it derives from a generic-looking Memory_manager,</span></div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span><span class="comment">                     * echan confirms that&#39;s at the moment a basically-abandoned idea.  Nor is there a practical plan</span></div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span><span class="comment">                     * to un-abandon it. */</span></div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span>                    make_shared&lt;Memory_manager&gt;(get_logger()),</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>                    <span class="keyword">typename</span> Arena::Shm_object_name_generator(std::move(pool_naming_func)),</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span>                    <span class="comment">/* This is clearly correct if *this super-classes Server_session_impl; but what about</span></div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span><span class="comment">                     * Client_session_impl, given that the setting comes from Server_app m_srv_app_ref?</span></div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span><span class="comment">                     * Answer: Yes, still; see discussion in Server_app::m_permissions_level_for_client_apps doc</span></div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span><span class="comment">                     * header. */</span></div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span>                    <a class="code hl_function" href="namespaceipc_1_1util.html#abda2ce5bcdbc26ca63d667b87818439c">util::shared_resource_permissions</a></div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>                      (Base::Base::m_srv_app_ref.m_permissions_level_for_client_apps));</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span>  <span class="keywordflow">if</span> (!m_session_shm)</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span>  {</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span>    FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Failed to create session-scope Arena; &quot;</span></div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span>                     <span class="stringliteral">&quot;details may be found above.  Session will not open.&quot;</span>);</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span> </div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span>    <span class="comment">/* We promised to dispose of this at the proper time.  Since we won&#39;t create the Channel that would do it,</span></div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span><span class="comment">     * let&#39;s do it directly. */</span></div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span>    <a class="code hl_function" href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#af0833f160dffd7f1c6921d27883a186b">transport::asio_local_stream_socket::release_native_peer_socket</a>(std::move(local_hndl));</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span> </div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>    <span class="comment">// See @todo on this Code; in short if create() emitted an Error_code, we&#39;d just emit that instead here.</span></div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>    <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error.html#a9723fe7e789d5d2d670c42d32238f223a9fcf37ffabb8e0b552276e4bcbe5b0e0">error::Code::S_SHM_ARENA_CREATION_FAILED</a>;</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>  }</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span> </div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>  <span class="keyword">auto</span> setup_done = make_shared&lt;bool&gt;(<span class="keyword">false</span>);</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span> </div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>  <span class="comment">/* Next m_shm_session (the lender from any locally-managed arena(s), including m_session_shm; the borrower</span></div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span><span class="comment">   * from opposing-process-managed arena(s)). */</span></div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span>  <span class="keyword">const</span> <span class="keyword">auto</span> nickname = ostream_op_string(<span class="stringliteral">&quot;jem-&quot;</span>, *<span class="keyword">this</span>);</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>  m_shm_channel.emplace(get_logger(),</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span>                        <a class="code hl_class" href="classipc_1_1transport_1_1Socket__stream__channel__of__blobs.html">transport::Socket_stream_channel_of_blobs&lt;true&gt;</a></div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span>                          (get_logger(), nickname,</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>                           <a class="code hl_class" href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html">transport::sync_io::Native_socket_stream</a></div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span>                             (get_logger(), nickname, std::move(local_hndl))),</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span>                        <a class="code hl_variable" href="classipc_1_1transport_1_1struc_1_1Channel__base.html#ab0eb05b5fb52364c99868a8535aaf26e">transport::struc::Channel_base::S_SERIALIZE_VIA_HEAP</a>,</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>                        Base::master_channel_const().session_token());</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span>  m_shm_channel-&gt;start([<span class="keyword">this</span>, setup_done](<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code) <span class="keyword">mutable</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>  {</div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>    <span class="comment">// We are in a struc::Channel thread (not our thread W).</span></div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span> </div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>    <span class="comment">/* Shm_session got an incoming-direction channel-hosing error.  I don&#39;t think there should be spurious</span></div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span><span class="comment">     * traffic, until we give this thing (SHM-session, SHM-arena) to actually use to user, so whatever is</span></div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span><span class="comment">     * captured here before *setup_done=true should lead to Shm_session::create() or Shm_session::lend_arena()</span></div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span><span class="comment">     * failing which we handle properly.  So eat it until *setup_done is true.</span></div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span><span class="comment">     *</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span><span class="comment">     * Come to think of it, I (ygoldfel) decided to more-or-less just eat it after *setup_done is true too.</span></div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span><span class="comment">     * Basically, once in PEER state, we would just do `if !Base::hosed() { Base::hose(err_code; }`.  Until then,</span></div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span><span class="comment">     * though (but after *setup_done) what to do depends on whether this is Server_session or Client_session.</span></div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span><span class="comment">     * Like for Server_session we could probably do something like on_master_channel_error(); for</span></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span><span class="comment">     * Client_session similarly.  Thing is, it&#39;s painful to set up that plumbing just for this unlikely</span></div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span><span class="comment">     * corner case.  (That might be because of how I&#39;ve set up this non-virtual hierarchy.  Could probably be</span></div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span><span class="comment">     * rejiggered to by very slick.  @todo maybe.)  So what to do?  For now I feel this:</span></div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span><span class="comment">     *   - If this added socket-stream-based channel dies, so would m_master_channel (also socket-stream-based).</span></div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span><span class="comment">     *   - So it would hose the session anyway, maybe even significantly sooner if it&#39;s due to zombification</span></div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span><span class="comment">     *     (it has keep-alive/idle-timer in both directions, unlike at this time this new channel).</span></div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span><span class="comment">     * Thus eating it seems all right in that highly catastrophic scenario, as the session-hosing sensors do</span></div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span><span class="comment">     * their best already.</span></div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span><span class="comment">     *</span></div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span><span class="comment">     * @todo Do set up the plumbing, and don&#39;t eat the error.  Consider also @todo above about perhaps</span></div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span><span class="comment">     * rejiggering the Session_impl hierarchy to make that plumbing easy-peasy to set up.  If we develop</span></div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span><span class="comment">     * more Session_impl guys -- for other SHM-providers perhaps -- this would rise in priority.  For now this</span></div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span><span class="comment">     * seems reasonable. */</span></div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>    Base::async_worker()-&gt;post([<span class="keyword">this</span>, setup_done = std::move(setup_done), err_code]()</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>    {</div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>      <span class="keywordflow">if</span> (*setup_done)</div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>      {</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>        FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Internal-use (for SHM) channel reported incoming-direction &quot;</span></div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>                         <span class="stringliteral">&quot;error [&quot;</span> &lt;&lt; err_code &lt;&lt; <span class="stringliteral">&quot;] [&quot;</span> &lt;&lt; err_code.message() &lt;&lt; <span class="stringliteral">&quot;].  This occured after SHM-setup; &quot;</span></div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>                         <span class="stringliteral">&quot;almost certainly the session master channel will catch a problem or has caught it; &quot;</span></div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>                         <span class="stringliteral">&quot;session will be hosed, or session opening will fail, depending on the situation.&quot;</span>);</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span>      }</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>      {</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>        FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Internal-use (for SHM) channel reported incoming-direction &quot;</span></div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span>                         <span class="stringliteral">&quot;error [&quot;</span> &lt;&lt; err_code &lt;&lt; <span class="stringliteral">&quot;] [&quot;</span> &lt;&lt; err_code.message() &lt;&lt; <span class="stringliteral">&quot;].  This occured during SHM-setup, &quot;</span></div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span>                         <span class="stringliteral">&quot;so we will catch it or have caught it and will fail to open session.&quot;</span>);</div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span>      }</div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span>    });</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span>  });</div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span> </div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>  m_shm_session = Shm_session::create(get_logger(),</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span>                                      <span class="comment">/* This is correct/vanilla value create() expects; but see note below</span></div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span><span class="comment">                                       * regarding this guy&#39;s logging. */</span></div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span>                                      Borrower_shm_pool_collection_repository_singleton::get_instance(),</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>                                      *m_shm_channel,</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>                                      <span class="comment">/* During its operation (not the init we&#39;re doing right now!) a synchronous</span></div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span><span class="comment">                                       * Shm_channel op (send(), sync_request()) may yield a channel-hosing error --</span></div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span><span class="comment">                                       * at most once -- and then this will be called: */</span></div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span>                                      [<span class="keyword">this</span>, setup_done]</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span>                                        (<span class="keyword">const</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>&amp; err_code) <span class="keyword">mutable</span></div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span>  {</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>    <span class="comment">/* We are in thread... I (ygoldfel) am not 100% sure at the moment (@todo would be nice to write it down here).</span></div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span><span class="comment">     * But actually it does not matter too much; at worst we&#39;re already in our thread W somehow,</span></div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span><span class="comment">     * and we&#39;re about to do an unnecessary post().  It is fine.</span></div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span><span class="comment">     *</span></div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span><span class="comment">     * What is important it that Shm_session tried to do a struc::Channel::send() (or sync_request()), and it</span></div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span><span class="comment">     * failed indicating that channel just got hosed; which means the *this Session can&#39;t really continue operating;</span></div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span><span class="comment">     * which means, similarly to the above incoming-direction handler do the following.</span></div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span><span class="comment">     *</span></div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span><span class="comment">     * Same comment and @todo(s) apply as in the handler above.  This is a little different, as it&#39;s a send error,</span></div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span><span class="comment">     * which wouldn&#39;t be reported as a channel error; but still we figure it something went this wrong with this</span></div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span><span class="comment">     * channel, the session master channel will be hosed too.  And even that caveat (again) only matters</span></div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span><span class="comment">     * after *setup_done; before *setup_done we will absolutely catch the problem before exiting the present method. */</span></div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>    Base::async_worker()-&gt;post([<span class="keyword">this</span>, setup_done = std::move(setup_done), err_code]()</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span>    {</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span>      <span class="keywordflow">if</span> (*setup_done)</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span>      {</div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>        FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Internal-use (for SHM) channel reported outgoing-direction &quot;</span></div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span>                         <span class="stringliteral">&quot;error [&quot;</span> &lt;&lt; err_code &lt;&lt; <span class="stringliteral">&quot;] [&quot;</span> &lt;&lt; err_code.message() &lt;&lt; <span class="stringliteral">&quot;].  This occured after SHM-setup; &quot;</span></div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>                         <span class="stringliteral">&quot;almost certainly the session master channel will catch a problem or has caught it; &quot;</span></div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span>                         <span class="stringliteral">&quot;session will be hosed, or session opening will fail, depending on the situation.&quot;</span>);</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>      }</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span>      {</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>        FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Internal-use (for SHM) channel reported outgoing-direction &quot;</span></div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>                         <span class="stringliteral">&quot;error [&quot;</span> &lt;&lt; err_code &lt;&lt; <span class="stringliteral">&quot;] [&quot;</span> &lt;&lt; err_code.message() &lt;&lt; <span class="stringliteral">&quot;].  This occured during SHM-setup, &quot;</span></div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>                         <span class="stringliteral">&quot;so we will catch it or have caught it and will fail to open session.&quot;</span>);</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span>      }</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span>    });</div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span>  });</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span>  <span class="comment">/* @todo Shm_session::create() takes an optional timeout for any Shm_channel::sync_request() (send, await response)</span></div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span><span class="comment">   * op it might do; if omitted it&#39;s infinite.  Assuming no unfathomable Shm_channel IPC error, a long duration</span></div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span><span class="comment">   * for such a .sync_request() in this context implies some kind of pathologically bad SHM-related operation.</span></div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span><span class="comment">   * For the time being we have no guidance on what that would look like, so we&#39;re assuming things will be fine</span></div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span><span class="comment">   * to not worry about limiting this.  Reconsider (perhaps after observing in the field). */</span></div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span> </div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span>  <span class="comment">/* Regarding Borrower_shm_pool_collection_repository logging:</span></div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span><span class="comment">   * Borrower_shm_pool_collection_repository is used in singleton fashion across the entire process, period.</span></div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span><span class="comment">   * Hence it&#39;s a glorified global.  That&#39;s fine; not our problem; but one aspect that&#39;s potentially our problem</span></div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span><span class="comment">   * is its logging.  It has a thread-unsafe .set_logger(Logger*) API subsequent to which it will do mostly-TRACE</span></div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span><span class="comment">   * logging -- though in unlikely error situations also WARNINGs which would be important (as usual for WARNINGs)</span></div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span><span class="comment">   * to see.  If not called, it just won&#39;t log (the usual behavior in flow::log when a Logger* is null) which is not</span></div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span><span class="comment">   * ideal.  So should we call it here?  Or somewhere?  Answer: Well, no.  In particular if *this is</span></div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span><span class="comment">   * Server_session_impl, then there can be 2+ of us; and while in production there shouldn&#39;t be 2+</span></div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span><span class="comment">   * `Client_session_impl`s around, it is allowed for test/debug/profile purposes.  Now, we could make some inferences</span></div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span><span class="comment">   * and do something like:</span></div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span><span class="comment">   *   - Session_server -- of which there should be (in production anyway) only 1 ever in a given process -- can</span></div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span><span class="comment">   *     do it in its ctor.</span></div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span><span class="comment">   *   - Client_session -- of which (as just noted) there should be at most 1 at a time (in production anyway) -- can</span></div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span><span class="comment">   *     do it here; meaning the &quot;active&quot; Client_session is always sharing its get_logger() with this singleton guy.</span></div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span><span class="comment">   * It&#39;s too janky.  Can I guarantee the singleton guy isn&#39;t logging *something* while we do our &quot;heuristic&quot;</span></div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span><span class="comment">   * .set_logger() call on it?  Not really.  For that matter these &quot;in production anyway&quot; claims aren&#39;t exactly</span></div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span><span class="comment">   * iron-clas guarantees either.  So what to do?</span></div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span><span class="comment">   *</span></div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span><span class="comment">   * There may be something smarter we can do to make this automagic (@todo look into it; discuss with echan), but</span></div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span><span class="comment">   * in the meantime it seems all-right to ask the user to make the proper</span></div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span><span class="comment">   *</span></div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span><span class="comment">   *   Borrower_shm_pool_collection_repository_singleton::get_instance().set_logger()</span></div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span><span class="comment">   *</span></div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span><span class="comment">   * call in a truly pre-session-work, single-thread context -- at start of main() or something -- to set up</span></div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span><span class="comment">   * this special guy&#39;s logging independently of (prior to) various ipc::session lifecycles.  So we do that</span></div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span><span class="comment">   * in public docs elsewhere.</span></div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span><span class="comment">   *</span></div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span><span class="comment">   * @todo Again -- it would be nice to make this automagic but not exactly high-priority.  It *would* be nice, as</span></div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span><span class="comment">   * literally everything else arena_lend-related is not all global-like like this, and we set it up internally</span></div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span><span class="comment">   * without making the user do *anything*.  Just this particular ask is fairly timid, so it&#39;s all right. */</span></div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span> </div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>  assert(m_shm_session &amp;&amp; <span class="stringliteral">&quot;It&#39;s not supposed to fail according to contract.&quot;</span>);</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span> </div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span>  <span class="comment">// Next register one with the other, so stuff constructed in session_shm() can be lend_object()ed.</span></div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span> </div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span>  <span class="keywordflow">if</span> (!shm_session()-&gt;lend_arena(session_shm_ptr()))</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>  {</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>    FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Registering session-scope local Arena with borrow/lend engine: &quot;</span></div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>                     <span class="stringliteral">&quot;failed (details likely above).  Assuming we are bug-free in using the SHM-provider API &quot;</span></div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>                     <span class="stringliteral">&quot;this would occur only on internal SHM-provider IPC channel error; but due to certain internal &quot;</span></div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span>                     <span class="stringliteral">&quot;reasons the triggering Error_code has not reached this thread yet; reporting a more general &quot;</span></div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>                     <span class="stringliteral">&quot;Error_code.  That detail aside: Session will not open.&quot;</span>);</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>    <span class="comment">/* Like it says, it&#39;d be nice to report the triggering Error_code.  As of this writing lend_arena() does not</span></div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span><span class="comment">     * report such a thing.  In reality, as we just said, probably the just-created (successfully!) Channel</span></div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span><span class="comment">     * reported error on send() or sync_request() or maybe incoming-direction error somehow;</span></div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span><span class="comment">     * so it will be reported through an on-error guy up above.</span></div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span><span class="comment">     * We cannot wait for that though -- I mean we could, but in the meantime what do we return, success?  No.</span></div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span><span class="comment">     * So we just eat that error in that handler and emit the following catch-all thing.</span></div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span><span class="comment">     * @todo Ideally lend_arena(), being a synchronous API that does internal IPC (synchronously, meaning it sends)</span></div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span><span class="comment">     * would just emit an Error_code and not (in that case) send it through the post_hose()ing guy.  Then we&#39;d just</span></div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span><span class="comment">     * emit it here and not need the setup_done thing either.  What we do, in fact, do is decent enough though. */</span></div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span> </div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span>    m_shm_session.reset(); <span class="comment">// Be somewhat aggressive, though they&#39;d go away in destructor anyway.</span></div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>    m_shm_channel.reset();</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>    m_session_shm.reset();</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>    <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error.html#a9723fe7e789d5d2d670c42d32238f223a04f63ffadacfeb4386f846615587aa41">error::Code::S_SHM_ARENA_LEND_FAILED</a>;</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span>  } <span class="comment">// if (!shm_session()-&gt;lend_arena(session_shm()))</span></div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span> </div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span>  <span class="comment">// Lastly register per-app-scope one if so asked (if Server_session_impl is the sub-class invoking us).</span></div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span> </div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span>  <span class="keywordflow">if</span> (app_shm_or_null &amp;&amp; (!shm_session()-&gt;lend_arena(app_shm_or_null)))</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>  {</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span>    FLOW_LOG_WARNING(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Registering app-scope local Arena with borrow/lend engine: &quot;</span></div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>                     <span class="stringliteral">&quot;failed (details likely above).  Assuming we are bug-free in using the SHM-provider API &quot;</span></div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>                     <span class="stringliteral">&quot;this would occur only on internal SHM-provider IPC channel error; but due to certain internal &quot;</span></div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>                     <span class="stringliteral">&quot;reasons the triggering Error_code has not reached this thread yet; reporting a more general &quot;</span></div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>                     <span class="stringliteral">&quot;Error_code.  That detail aside: Session will not open.&quot;</span>);</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span> </div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span>    m_shm_session.reset();</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span>    m_shm_channel.reset();</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>    m_session_shm.reset();</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>    <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error.html#a9723fe7e789d5d2d670c42d32238f223a04f63ffadacfeb4386f846615587aa41">error::Code::S_SHM_ARENA_LEND_FAILED</a>;</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span>  }</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span>  <span class="comment">// else</span></div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span> </div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span>  *setup_done = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span> </div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>  FLOW_LOG_INFO(<span class="stringliteral">&quot;Session [&quot;</span> &lt;&lt; * <span class="keyword">this</span> &lt;&lt; <span class="stringliteral">&quot;]: Successfully created session-scope Arena; and &quot;</span></div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span>                <span class="stringliteral">&quot;borrow/lend engine Shm_session; registered the former to the latter; &quot;</span></div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>                <span class="stringliteral">&quot;registered app-scope arena too? = [&quot;</span> &lt;&lt; <span class="keywordtype">bool</span>(app_shm_or_null) &lt;&lt; <span class="stringliteral">&quot;].&quot;</span>);</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span> </div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span>  <span class="keywordflow">return</span> <a class="code hl_typedef" href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">Error_code</a>();</div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span>} <span class="comment">// Session_impl::init_shm()</span></div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span> </div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6a0c754becd19900b19f14b849bb5e7">  532</a></span><span class="keywordtype">void</span> CLASS_JEM_SESSION_IMPL::reset_shm()</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span>{</div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span>  m_shm_session.reset();</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span>  m_shm_channel.reset();</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span>  m_session_shm.reset();</div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span>}</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span> </div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a24a9e7098a5f58574e8ca88a035365a7">  540</a></span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Arena* CLASS_JEM_SESSION_IMPL::session_shm()</div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span>{</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span>  <span class="keywordflow">return</span> m_session_shm.get();</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span>}</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span> </div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a90b16390f24a5fc481f6d00ebdb05c85">  546</a></span>std::shared_ptr&lt;typename CLASS_JEM_SESSION_IMPL::Arena&gt; CLASS_JEM_SESSION_IMPL::session_shm_ptr()</div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span>{</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>  <span class="keywordflow">return</span> m_session_shm;</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span>}</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span> </div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab1a6a87ae71fc0b6b14a7af7aec4b2bc">  552</a></span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Shm_session* CLASS_JEM_SESSION_IMPL::shm_session()</div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span>{</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span>  <span class="keywordflow">return</span> m_shm_session.get();</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span>}</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span> </div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno">  557</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Blob</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a76bdd6d7541039ab356051fcc9a01afa">  560</a></span>  CLASS_JEM_SESSION_IMPL::lend_object(<span class="keyword">const</span> <span class="keyword">typename</span> Arena::template Handle&lt;T&gt;&amp; handle)</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span>{</div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>  <span class="keyword">auto</span> blob = shm_session()-&gt;template lend_object&lt;T&gt;(handle);</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span> </div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span>  <span class="comment">// @todo Maybe we should just return empty Blob?  For now doing this: SHM-classic will assert() too.  Reconsider both.</span></div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span>  assert((!blob.empty()) &amp;&amp; <span class="stringliteral">&quot;Most likely `handle` did not come validly from one of `*this`-owned `Arena`s.&quot;</span>);</div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span> </div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span>  <span class="keywordflow">return</span> blob;</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>}</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span> </div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Arena::template Handle&lt;T&gt;</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6482736670c2bfb6a8bc259bfdb17fa">  573</a></span>  CLASS_JEM_SESSION_IMPL::borrow_object(<span class="keyword">const</span> <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a314a767c3ed26af5e3eb0f6b640e1f1b">Blob</a>&amp; serialization)</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span>{</div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span>  <span class="keyword">const</span> <span class="keyword">auto</span> obj = shm_session()-&gt;template borrow_object&lt;T&gt;(serialization);</div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span> </div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span>  <span class="comment">// @todo Maybe we should just return nullptr?  For now doing this: SHM-classic will assert() too.  Reconsider both.</span></div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span>  assert(obj &amp;&amp; <span class="stringliteral">&quot;Most likely `serialization` is invalid.&quot;</span>);</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span> </div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span>  <span class="keywordflow">return</span> obj;</div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span>}</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno">  582</span> </div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Structured_msg_builder_config</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abe3d48af95fb68929d056e9269a9bc30">  585</a></span>  CLASS_JEM_SESSION_IMPL::session_shm_builder_config()</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span>{</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span>  <span class="keywordflow">return</span> <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a8592edcdb25d0c824a2e72e1539c884f">Structured_msg_builder_config</a>{ get_logger(), 0, 0, session_shm() };</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span>}</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span> </div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Structured_msg_builder_config::Builder::Session</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a393edf51b9c503ffbbdfb65a34235a0e">  592</a></span>  CLASS_JEM_SESSION_IMPL::session_shm_lender_session()</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span>{</div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span>  <span class="keywordflow">return</span> shm_session();</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span>}</div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span> </div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Structured_msg_reader_config</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a5979ebed1dcdb2d90b029076849fd146">  599</a></span>  CLASS_JEM_SESSION_IMPL::shm_reader_config()</div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span>{</div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span>  <span class="keywordflow">return</span> <a class="code hl_typedef" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#af5fc836fca12ea5f4de580c15d4225d1">Structured_msg_reader_config</a>{ get_logger(), shm_session() };</div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span>}</div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span> </div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Structured_msg_reader_config</div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a27cf1a12563f5709e31b6be0ac29289a">  606</a></span>  CLASS_JEM_SESSION_IMPL::session_shm_reader_config()</div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span>{</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span>  <span class="keywordflow">return</span> shm_reader_config();</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span>}</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span> </div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span><span class="keyword">typename</span> CLASS_JEM_SESSION_IMPL::Structured_msg_reader_config</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abf580a9b0c7ae3609cbdbeca96ab0e2e">  613</a></span>  CLASS_JEM_SESSION_IMPL::app_shm_reader_config()</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span>{</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span>  <span class="keywordflow">return</span> shm_reader_config();</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span>}</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span> </div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span><a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno"><a class="line" href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a9e281c0e15ff899034ca059aa9e0e4f6">  619</a></span>std::ostream&amp; <a class="code hl_function" href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc.html#a5044ac385b12210816fc95ca1d5408b6">operator&lt;&lt;</a>(std::ostream&amp; os, <span class="keyword">const</span> <a class="code hl_define" href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#a35b1b189e385cec58168c616b8a7abbf">CLASS_JEM_SESSION_IMPL</a>&amp; val)</div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span>{</div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno">  621</span>  <span class="keywordflow">return</span> os &lt;&lt; static_cast&lt;const typename CLASS_JEM_SESSION_IMPL::Base&amp;&gt;(val);</div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno">  622</span>}</div>
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno">  623</span> </div>
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno">  624</span><span class="preprocessor">#undef CLASS_JEM_SESSION_IMPL</span></div>
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno">  625</span><span class="preprocessor">#undef TEMPLATE_JEM_SESSION_IMPL</span></div>
<div class="line"><a id="l00626" name="l00626"></a><span class="lineno">  626</span> </div>
<div class="line"><a id="l00627" name="l00627"></a><span class="lineno">  627</span>} <span class="comment">// namespace ipc::session::shm::arena_lend::jemalloc</span></div>
<div class="ttc" id="aarena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_html_a35b1b189e385cec58168c616b8a7abbf"><div class="ttname"><a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#a35b1b189e385cec58168c616b8a7abbf">CLASS_JEM_SESSION_IMPL</a></div><div class="ttdeci">#define CLASS_JEM_SESSION_IMPL</div><div class="ttdoc">Internally used macro; public API users should disregard (same deal as in struc/channel....</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00265">session_impl.hpp:265</a></div></div>
<div class="ttc" id="aarena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_html_af246ab80f7fcbde0ef7185b1ef3ccd21"><div class="ttname"><a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp.html#af246ab80f7fcbde0ef7185b1ef3ccd21">TEMPLATE_JEM_SESSION_IMPL</a></div><div class="ttdeci">#define TEMPLATE_JEM_SESSION_IMPL</div><div class="ttdoc">Internally used macro; public API users should disregard (same deal as in struc/channel....</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00262">session_impl.hpp:262</a></div></div>
<div class="ttc" id="achannel__base_8hpp_html"><div class="ttname"><a href="channel__base_8hpp.html">channel_base.hpp</a></div></div>
<div class="ttc" id="aclassSession__impl__t_html"><div class="ttname"><a href="classSession__impl__t.html">Session_impl_t</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1Session__base_html"><div class="ttname"><a href="classipc_1_1session_1_1Session__base.html">ipc::session::Session_base</a></div><div class="ttdoc">Internal type containing data and types common to internal types Server_session_impl and Client_sessi...</div><div class="ttdef"><b>Definition:</b> <a href="session__base_8hpp_source.html#l00067">session_base.hpp:69</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html">ipc::session::shm::arena_lend::jemalloc::Session_impl</a></div><div class="ttdoc">Common data and logic for shm::arena_lend::jemalloc::Server_session_impl and shm::arena_lend::jemallo...</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00059">session_impl.hpp:60</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a05a924415ca44783d3ef5c0efb31f42e"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a05a924415ca44783d3ef5c0efb31f42e">ipc::session::shm::arena_lend::jemalloc::Session_impl::Arena</a></div><div class="ttdeci">ipc::shm::arena_lend::jemalloc::Ipc_arena Arena</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00079">session_impl.hpp:79</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a24a9e7098a5f58574e8ca88a035365a7"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a24a9e7098a5f58574e8ca88a035365a7">ipc::session::shm::arena_lend::jemalloc::Session_impl::session_shm</a></div><div class="ttdeci">Arena * session_shm()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00540">session_impl.hpp:540</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a264175697b8e32e732bee46790ab3c67"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a264175697b8e32e732bee46790ab3c67">ipc::session::shm::arena_lend::jemalloc::Session_impl::m_shm_channel</a></div><div class="ttdeci">std::optional&lt; typename Shm_session::Shm_channel &gt; m_shm_channel</div><div class="ttdoc">Internal-use transport::struc::Channel for m_shm_session. null &lt;=&gt; m_shm_session is null.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00251">session_impl.hpp:251</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a27cf1a12563f5709e31b6be0ac29289a"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a27cf1a12563f5709e31b6be0ac29289a">ipc::session::shm::arena_lend::jemalloc::Session_impl::session_shm_reader_config</a></div><div class="ttdeci">Structured_msg_reader_config session_shm_reader_config()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00606">session_impl.hpp:606</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a314a767c3ed26af5e3eb0f6b640e1f1b"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a314a767c3ed26af5e3eb0f6b640e1f1b">ipc::session::shm::arena_lend::jemalloc::Session_impl::Blob</a></div><div class="ttdeci">Shm_session::Blob Blob</div><div class="ttdoc">Alias for a light-weight blob used in borrow_object() and lend_object().</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00096">session_impl.hpp:96</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a393edf51b9c503ffbbdfb65a34235a0e"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a393edf51b9c503ffbbdfb65a34235a0e">ipc::session::shm::arena_lend::jemalloc::Session_impl::session_shm_lender_session</a></div><div class="ttdeci">Structured_msg_builder_config::Builder::Session session_shm_lender_session()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00592">session_impl.hpp:592</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a39b9fc08a109f79471b7606842e3a8de"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a39b9fc08a109f79471b7606842e3a8de">ipc::session::shm::arena_lend::jemalloc::Session_impl::Shm_session_ptr</a></div><div class="ttdeci">std::shared_ptr&lt; Shm_session &gt; Shm_session_ptr</div><div class="ttdoc">How the SHM-provider refers to a Shm_session.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00193">session_impl.hpp:193</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a46155078d8764c71a8d75db64345074b"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a46155078d8764c71a8d75db64345074b">ipc::session::shm::arena_lend::jemalloc::Session_impl::init_shm</a></div><div class="ttdeci">Error_code init_shm(util::Native_handle &amp;&amp;local_hndl, const Shared_name &amp;pool_name_fragment_or_empty, const std::shared_ptr&lt; Arena &gt; &amp;app_shm_or_null={})</div><div class="ttdoc">To be invoked at most once, synchronously sets up nearly-all aspects of this arena-lending-SHM-capabl...</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00269">session_impl.hpp:270</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a49b633551f139e19999c0d4b060dc65b"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a49b633551f139e19999c0d4b060dc65b">ipc::session::shm::arena_lend::jemalloc::Session_impl::m_shm_session</a></div><div class="ttdeci">Shm_session_ptr m_shm_session</div><div class="ttdoc">See shm_session(). This becomes non-null in init_shm().</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00254">session_impl.hpp:254</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a5979ebed1dcdb2d90b029076849fd146"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a5979ebed1dcdb2d90b029076849fd146">ipc::session::shm::arena_lend::jemalloc::Session_impl::shm_reader_config</a></div><div class="ttdeci">Structured_msg_reader_config shm_reader_config()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00599">session_impl.hpp:599</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a76bdd6d7541039ab356051fcc9a01afa"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a76bdd6d7541039ab356051fcc9a01afa">ipc::session::shm::arena_lend::jemalloc::Session_impl::lend_object</a></div><div class="ttdeci">Blob lend_object(const typename Arena::template Handle&lt; T &gt; &amp;handle)</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00560">session_impl.hpp:560</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a830c19b190c29b9bb326b0790e11976c"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a830c19b190c29b9bb326b0790e11976c">ipc::session::shm::arena_lend::jemalloc::Session_impl::m_session_shm</a></div><div class="ttdeci">std::shared_ptr&lt; Arena &gt; m_session_shm</div><div class="ttdoc">See session_shm(). This becomes non-null in init_shm().</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00248">session_impl.hpp:248</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a8592edcdb25d0c824a2e72e1539c884f"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a8592edcdb25d0c824a2e72e1539c884f">ipc::session::shm::arena_lend::jemalloc::Session_impl::Structured_msg_builder_config</a></div><div class="ttdeci">typename transport::struc::shm::arena_lend::jemalloc::Builder::Config Structured_msg_builder_config</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00090">session_impl.hpp:90</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_a90b16390f24a5fc481f6d00ebdb05c85"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#a90b16390f24a5fc481f6d00ebdb05c85">ipc::session::shm::arena_lend::jemalloc::Session_impl::session_shm_ptr</a></div><div class="ttdeci">std::shared_ptr&lt; Arena &gt; session_shm_ptr()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00546">session_impl.hpp:546</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_ab1a6a87ae71fc0b6b14a7af7aec4b2bc"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab1a6a87ae71fc0b6b14a7af7aec4b2bc">ipc::session::shm::arena_lend::jemalloc::Session_impl::shm_session</a></div><div class="ttdeci">Shm_session * shm_session()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00552">session_impl.hpp:552</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_ab6482736670c2bfb6a8bc259bfdb17fa"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6482736670c2bfb6a8bc259bfdb17fa">ipc::session::shm::arena_lend::jemalloc::Session_impl::borrow_object</a></div><div class="ttdeci">Arena::template Handle&lt; T &gt; borrow_object(const Blob &amp;serialization)</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00573">session_impl.hpp:573</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_ab6a0c754becd19900b19f14b849bb5e7"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#ab6a0c754becd19900b19f14b849bb5e7">ipc::session::shm::arena_lend::jemalloc::Session_impl::reset_shm</a></div><div class="ttdeci">void reset_shm()</div><div class="ttdoc">Undoes init_shm_arenas(), namely destroying shm_session() pointee and session_shm() pointee.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00532">session_impl.hpp:532</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_abe3d48af95fb68929d056e9269a9bc30"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abe3d48af95fb68929d056e9269a9bc30">ipc::session::shm::arena_lend::jemalloc::Session_impl::session_shm_builder_config</a></div><div class="ttdeci">Structured_msg_builder_config session_shm_builder_config()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00585">session_impl.hpp:585</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_abf580a9b0c7ae3609cbdbeca96ab0e2e"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#abf580a9b0c7ae3609cbdbeca96ab0e2e">ipc::session::shm::arena_lend::jemalloc::Session_impl::app_shm_reader_config</a></div><div class="ttdeci">Structured_msg_reader_config app_shm_reader_config()</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00613">session_impl.hpp:613</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_acde57c6511b5c4aef9079f116f8ca6a8"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#acde57c6511b5c4aef9079f116f8ca6a8">ipc::session::shm::arena_lend::jemalloc::Session_impl::Shm_session</a></div><div class="ttdeci">jemalloc::Shm_session Shm_session</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00082">session_impl.hpp:82</a></div></div>
<div class="ttc" id="aclassipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl_html_af5fc836fca12ea5f4de580c15d4225d1"><div class="ttname"><a href="classipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1Session__impl.html#af5fc836fca12ea5f4de580c15d4225d1">ipc::session::shm::arena_lend::jemalloc::Session_impl::Structured_msg_reader_config</a></div><div class="ttdeci">typename transport::struc::shm::arena_lend::jemalloc::Reader::Config Structured_msg_reader_config</div><div class="ttdoc">See shm::arena_lend::jemalloc::Session_mv counterpart for public description.</div><div class="ttdef"><b>Definition:</b> <a href="arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__impl_8hpp_source.html#l00093">session_impl.hpp:93</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1Socket__stream__channel__of__blobs_html"><div class="ttname"><a href="classipc_1_1transport_1_1Socket__stream__channel__of__blobs.html">ipc::transport::Socket_stream_channel_of_blobs</a></div><div class="ttdoc">A Channel with a blobs pipe only (no handles pipe) that uses a Unix domain socket connection as the u...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__core_2src_2ipc_2transport_2channel_8hpp_source.html#l01093">channel.hpp:1097</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1struc_1_1Channel__base_html_ab0eb05b5fb52364c99868a8535aaf26e"><div class="ttname"><a href="classipc_1_1transport_1_1struc_1_1Channel__base.html#ab0eb05b5fb52364c99868a8535aaf26e">ipc::transport::struc::Channel_base::S_SERIALIZE_VIA_HEAP</a></div><div class="ttdeci">static constexpr Serialize_via_heap S_SERIALIZE_VIA_HEAP</div><div class="ttdoc">The sole value of the tag type Serialize_via_heap.</div><div class="ttdef"><b>Definition:</b> <a href="channel__base_8hpp_source.html#l00157">channel_base.hpp:157</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1struc_1_1Channel_html"><div class="ttname"><a href="classipc_1_1transport_1_1struc_1_1Channel.html">ipc::transport::struc::Channel</a></div><div class="ttdoc">Owning and wrapping a pre-connected transport::Channel peer (an endpoint of an established channel ov...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__transport__structured_2src_2ipc_2transport_2struc_2channel_8hpp_source.html#l00586">channel.hpp:589</a></div></div>
<div class="ttc" id="aclassipc_1_1transport_1_1sync__io_1_1Native__socket__stream_html"><div class="ttname"><a href="classipc_1_1transport_1_1sync__io_1_1Native__socket__stream.html">ipc::transport::sync_io::Native_socket_stream</a></div><div class="ttdoc">Implements both sync_io::Native_handle_sender and sync_io::Native_handle_receiver concepts by using a...</div><div class="ttdef"><b>Definition:</b> <a href="sync__io_2native__socket__stream_8hpp_source.html#l00150">native_socket_stream.hpp:151</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html">ipc::util::Shared_name</a></div><div class="ttdoc">String-wrapping abstraction representing a name uniquely distinguishing a kernel-persistent entity fr...</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00241">shared_name.hpp:242</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_a48f20b7b54490aa10dc64081d34c55b2"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#a48f20b7b54490aa10dc64081d34c55b2">ipc::util::Shared_name::ct</a></div><div class="ttdeci">static Shared_name ct(const Source &amp;src)</div><div class="ttdoc">Copy-constructs from a char-sequence container (including string, util::String_view,...</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00674">shared_name.hpp:674</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_a4c294e23753eb706b4c297d99d24cd48"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#a4c294e23753eb706b4c297d99d24cd48">ipc::util::Shared_name::S_RESOURCE_TYPE_ID_SHM</a></div><div class="ttdeci">static const Shared_name S_RESOURCE_TYPE_ID_SHM</div><div class="ttdoc">Relative-folder fragment (no separators) identifying the resource type for: SHM pools.</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8hpp_source.html#l00312">shared_name.hpp:312</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_a861ea6c9ad6672e83bab5c7747b66f7b"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#a861ea6c9ad6672e83bab5c7747b66f7b">ipc::util::Shared_name::empty</a></div><div class="ttdeci">bool empty() const</div><div class="ttdoc">Returns true if and only if str().empty() == true.</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8cpp_source.html#l00155">shared_name.cpp:155</a></div></div>
<div class="ttc" id="aclassipc_1_1util_1_1Shared__name_html_ae89e1e061f87ffe0288514e254837595"><div class="ttname"><a href="classipc_1_1util_1_1Shared__name.html#ae89e1e061f87ffe0288514e254837595">ipc::util::Shared_name::str</a></div><div class="ttdeci">const std::string &amp; str() const</div><div class="ttdoc">Returns (sans copying) ref to immutable entire wrapped name string, suitable to pass into sys calls w...</div><div class="ttdef"><b>Definition:</b> <a href="shared__name_8cpp_source.html#l00140">shared_name.cpp:140</a></div></div>
<div class="ttc" id="aipc__shm__arena__lend_2src_2ipc_2session_2shm_2arena__lend_2jemalloc_2error_8hpp_html"><div class="ttname"><a href="ipc__shm__arena__lend_2src_2ipc_2session_2shm_2arena__lend_2jemalloc_2error_8hpp.html">error.hpp</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error_html_a9723fe7e789d5d2d670c42d32238f223a04f63ffadacfeb4386f846615587aa41"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error.html#a9723fe7e789d5d2d670c42d32238f223a04f63ffadacfeb4386f846615587aa41">ipc::session::shm::arena_lend::jemalloc::error::Code::S_SHM_ARENA_LEND_FAILED</a></div><div class="ttdeci">@ S_SHM_ARENA_LEND_FAILED</div><div class="ttdoc">Session opening: While registering the session's locally-managed SHM-arena(s) of an arena-lending SHM...</div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error_html_a9723fe7e789d5d2d670c42d32238f223a9fcf37ffabb8e0b552276e4bcbe5b0e0"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_1_1error.html#a9723fe7e789d5d2d670c42d32238f223a9fcf37ffabb8e0b552276e4bcbe5b0e0">ipc::session::shm::arena_lend::jemalloc::error::Code::S_SHM_ARENA_CREATION_FAILED</a></div><div class="ttdeci">@ S_SHM_ARENA_CREATION_FAILED</div><div class="ttdoc">Session opening: While setting up the session's locally-managed SHM-arena(s) of an arena-lending SHM-...</div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_html"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc.html">ipc::session::shm::arena_lend::jemalloc</a></div><div class="ttdoc">Support for SHM-backed ipc::session sessions and session-servers with the SHM-jemalloc (ipc::shm::are...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm__arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2client__session__impl_8hpp_source.html#l00034">client_session_impl.hpp:35</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_html_a5044ac385b12210816fc95ca1d5408b6"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc.html#a5044ac385b12210816fc95ca1d5408b6">ipc::session::shm::arena_lend::jemalloc::operator&lt;&lt;</a></div><div class="ttdeci">std::ostream &amp; operator&lt;&lt;(std::ostream &amp;os, const Client_session_impl&lt; S_MQ_TYPE_OR_NONE, S_TRANSMIT_NATIVE_HANDLES, Mdt_payload &gt; &amp;val)</div><div class="ttdoc">Prints string representation of the given Client_session_impl to the given ostream.</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm__arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2client__session__impl_8hpp_source.html#l00585">client_session_impl.hpp:585</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc_html_a8902859cb5006277933c12eeb9c6ef5d"><div class="ttname"><a href="namespaceipc_1_1session_1_1shm_1_1arena__lend_1_1jemalloc.html#a8902859cb5006277933c12eeb9c6ef5d">ipc::session::shm::arena_lend::jemalloc::SHM_SUBTYPE_PREFIX</a></div><div class="ttdeci">const Shared_name SHM_SUBTYPE_PREFIX</div><div class="ttdoc">Internally used in pool names generated in this namespace to differentiate from those of other SHM-su...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__shm__arena__lend_2src_2ipc_2session_2detail_2shm_2arena__lend_2jemalloc_2session__shared__name_8cpp_source.html#l00034">session_shared_name.cpp:34</a></div></div>
<div class="ttc" id="anamespaceipc_1_1session_html_a365d2d63f77b738e67e206af6b702634"><div class="ttname"><a href="namespaceipc_1_1session.html#a365d2d63f77b738e67e206af6b702634">ipc::session::build_conventional_shared_name</a></div><div class="ttdeci">Shared_name build_conventional_shared_name(const Shared_name &amp;resource_type, const Shared_name &amp;srv_app_name, const Shared_name &amp;srv_namespace, const Shared_name &amp;cli_app_name, const Shared_name &amp;cli_namespace_or_sentinel)</div><div class="ttdoc">Builds an absolute name according to the path convention explained in Shared_name class doc header; t...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__session_2src_2ipc_2session_2detail_2session__shared__name_8cpp_source.html#l00043">session_shared_name.cpp:44</a></div></div>
<div class="ttc" id="anamespaceipc_1_1transport_1_1asio__local__stream__socket_html_af0833f160dffd7f1c6921d27883a186b"><div class="ttname"><a href="namespaceipc_1_1transport_1_1asio__local__stream__socket.html#af0833f160dffd7f1c6921d27883a186b">ipc::transport::asio_local_stream_socket::release_native_peer_socket</a></div><div class="ttdeci">void release_native_peer_socket(Native_handle &amp;&amp;peer_socket_native_or_null)</div><div class="ttdoc">Little utility that returns the raw Native_handle suitable for Peer_socket to the OS.</div><div class="ttdef"><b>Definition:</b> <a href="asio__local__stream__socket_8cpp_source.html#l00417">asio_local_stream_socket.cpp:417</a></div></div>
<div class="ttc" id="anamespaceipc_1_1util_html_abda2ce5bcdbc26ca63d667b87818439c"><div class="ttname"><a href="namespaceipc_1_1util.html#abda2ce5bcdbc26ca63d667b87818439c">ipc::util::shared_resource_permissions</a></div><div class="ttdeci">Permissions shared_resource_permissions(Permissions_level permissions_lvl)</div><div class="ttdoc">Maps general Permissions_level specifier to low-level Permissions value, when the underlying resource...</div><div class="ttdef"><b>Definition:</b> <a href="ipc__core_2src_2ipc_2util_2util_8cpp_source.html#l00037">util.cpp:37</a></div></div>
<div class="ttc" id="anamespaceipc_html_aa3192e586cc45d3e7c22463bf2760f89"><div class="ttname"><a href="namespaceipc.html#aa3192e586cc45d3e7c22463bf2760f89">ipc::Error_code</a></div><div class="ttdeci">flow::Error_code Error_code</div><div class="ttdoc">Short-hand for flow::Error_code which is very common.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00298">common.hpp:298</a></div></div>
<div class="ttc" id="asession_2detail_2shm_2arena__lend_2jemalloc_2jemalloc__fwd_8hpp_html"><div class="ttname"><a href="session_2detail_2shm_2arena__lend_2jemalloc_2jemalloc__fwd_8hpp.html">jemalloc_fwd.hpp</a></div></div>
<div class="ttc" id="asession_2shm_2arena__lend_2jemalloc_2jemalloc_8hpp_html"><div class="ttname"><a href="session_2shm_2arena__lend_2jemalloc_2jemalloc_8hpp.html">jemalloc.hpp</a></div></div>
<div class="ttc" id="asession__shared__name_8hpp_html"><div class="ttname"><a href="session__shared__name_8hpp.html">session_shared_name.hpp</a></div></div>
<div class="ttc" id="astructipc_1_1transport_1_1struc_1_1Heap__fixed__builder_1_1Config_html"><div class="ttname"><a href="structipc_1_1transport_1_1struc_1_1Heap__fixed__builder_1_1Config.html">ipc::transport::struc::Heap_fixed_builder::Config</a></div><div class="ttdoc">Implements Struct_builder::Config sub-concept.</div><div class="ttdef"><b>Definition:</b> <a href="heap__serializer_8hpp_source.html#l00154">heap_serializer.hpp:155</a></div></div>
<div class="ttc" id="astructipc_1_1transport_1_1struc_1_1Heap__reader_1_1Config_html"><div class="ttname"><a href="structipc_1_1transport_1_1struc_1_1Heap__reader_1_1Config.html">ipc::transport::struc::Heap_reader::Config</a></div><div class="ttdoc">Implements Struct_reader::Config sub-concept.</div><div class="ttdef"><b>Definition:</b> <a href="heap__serializer_8hpp_source.html#l00332">heap_serializer.hpp:333</a></div></div>
<div class="ttc" id="astructipc_1_1util_1_1Native__handle_html"><div class="ttname"><a href="structipc_1_1util_1_1Native__handle.html">ipc::util::Native_handle</a></div><div class="ttdoc">A monolayer-thin wrapper around a native handle, a/k/a descriptor a/k/a FD.</div><div class="ttdef"><b>Definition:</b> <a href="native__handle_8hpp_source.html#l00062">native_handle.hpp:63</a></div></div>
<div class="ttc" id="atransport_2struc_2shm_2arena__lend_2jemalloc_2jemalloc_8hpp_html"><div class="ttname"><a href="transport_2struc_2shm_2arena__lend_2jemalloc_2jemalloc_8hpp.html">jemalloc.hpp</a></div></div>
<div class="ttc" id="atransport_2struc_2shm_2arena__lend_2jemalloc_2jemalloc__fwd_8hpp_html"><div class="ttname"><a href="transport_2struc_2shm_2arena__lend_2jemalloc_2jemalloc__fwd_8hpp.html">jemalloc_fwd.hpp</a></div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Thu May 2 2024 23:56:38 for Flow-IPC by&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.4
</small></address>
</body>
</html>
